Microsoft shipped 3.9 million Xbox Ones into retail before the end of 2013, according to its financials for the quarter ending December 31st.
Lest we forget that the Xbox 360 is still a viable platform, however, it's worth noting that the last-gen console wasn't far behind at 3.5 million units for the period.
Microsoft reported 'record' revenues of $24.52 billion for the quarter, up from $21.46 billion a year earlier. The Devices and Consumer Hardware division, which houses the Xbox business, accounted for $4.7 billion of that, up significantly from the $2.8 billion it delivered the previous year.
Microsoft CEO Steve Ballmer commented, "Our Commercial segment continues to outpace the overall market, and our Devices and Consumer segment had a great holiday quarter. The investments we are making in devices and services that deliver high-value experiences to our customers, and the work we are doing with our partners, are driving strong results and positioning us well for long-term growth."